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(11) | EP 0 460 582 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Steering angle detecting apparatus for motor vehicles |
(57) A steering angle detecting apparatus for accurately and surely detecting a steering
angle of a motor vehicle. The apparatus is equipped with a turning angle detector
for detecting a turning angle of a steering wheel of the motor vehicle. In addition,
the apparatus estimates a turning angle of the steering wheel on the basis of the
difference in speed between left and right wheels of the motor vehicle so as to calculate
the difference in phase between the detection turning angle and the estimation turning
angle. For detecting the accurate vehicle steering angle, the detection turning angle
is corrected on the basis of the calculated phase difference therebetween. |